What is "o.g.c."

O.G.C. (Originoo Gunn Clappaz) is a Hip Hop group consisting of members Jack McNair (aka Starang Wondah) (Gunn Clappa Numba One, also known as Big Will, Hurricane Starang and Strang Da Beast From Da East), Barret Powell (aka Louieville Sluggah) (Gunn Clappa Numba Two, also known as Hennyville Guzzler or Henny), and Dashawn Jamal Yates (aka Top Dog) (Gunn Clappa Numba Three, also known as Big Kahuna and D-O). The group is mostly known through their membership in the Boot Camp Clik, along with Buckshot, Smif-N-Wessun and Heltah Skeltah.